Remembers if you have alreaded viewed any notice/warning message(s). Such a message is used to inform users of potential downtime or issues that might affect the normal operation of the website. It is set to expire after the date when such notice is obsolete (eg after an expected downtime/error is fixed).

Yes

Yes

PHPSESSID

The ID of your session.

Yes

Yes

__utma

This is set by Google Analytics. It stores each user's amount of visits, and the time of the first visit, the previous visit, and the current visit.

Yes

Yes

__utmb, __utmc

These are set by Google Analytics. They are used to check approximately how long you stay on a site (when a visit starts, and approximately ends).

Yes

Yes

__utmz

This is set by Google Analytics. It stores where a visitor came from (search engine, search keyword, link).